In the petrochemical industry, nitrogen gas is a “critical auxiliary resource” that ensures production safety and process stability. From wellhead protection during oil and gas extraction, catalytic reactions in refining units, to storage and transportation of chemical products, nitrogen’s inert properties isolate oxygen, suppress corrosion, and prevent combustion or explosions. It plays a vital role across the entire industry chain — from extraction and refining to storage and transportation.
However, traditional liquid nitrogen supply models suffer from transportation delays, high storage risks, and rising costs, making them ill-suited for the petrochemical sector’s continuous production demands and stringent safety requirements.
As a professional brand specializing in gas separation equipment, MINNUO has leveraged years of technical expertise to develop nitrogen generators based on Pressure Swing Adsorption (PSA) technology, precisely tailored to the needs of the petrochemical industry. With customized nitrogen supply solutions delivered to over 300 petrochemical enterprises nationwide — including industry leaders like Sinopec, PetroChina, and Hengli Petrochemical — MINNUO has become a benchmark for safe nitrogen supply and efficient cost reduction in the field.
I. MINNUO Nitrogen Generators: Core Technical Advantages Tailored for Petrochemical Applications
The petrochemical sector operates in complex environments (flammable, explosive, and dynamic working conditions) and demands strict nitrogen specifications (stable purity and continuous supply). MINNUO nitrogen generators offer multi-dimensional competitive advantages through continuous innovation:
1. Explosion-Proof Design for High-Risk Environments
In petrochemical sites with high oil and gas concentrations, equipment safety is non-negotiable. MINNUO nitrogen generators fully comply with GB 50160 – Fire Prevention Code for Petrochemical Enterprises, adopting explosion-proof motors (certified to Ex d IIB T4 Ga) and reinforced housings to prevent ignition of external flammable gases. The equipment cabinet is made of 304 stainless steel with anti-static treatment, and grounding resistance is below 4Ω, effectively preventing static charge buildup.
An online oxygen monitoring system continuously tracks nitrogen purity (accuracy ±0.01%). If oxygen content exceeds 1% (the petrochemical safety threshold), the system automatically shuts off nitrogen output, preventing substandard gas from entering the process. It also features triple emergency protection: emergency stop, overpressure relief, and temperature-based cooling, ensuring a response time within 3 seconds during abnormal situations to provide maximum safety.
2. Continuous, Stable Nitrogen Supply to Prevent Downtime
In petrochemical production, “downtime is not an option.” A nitrogen supply interruption can result in material waste and production losses. MINNUO nitrogen generators use a dual-tower alternating cycle system — one tower adsorbs nitrogen from compressed air, while the other regenerates and expels oxygen. Towers switch every 120 seconds, enabling 24/7 uninterrupted nitrogen production. Annual runtime exceeds 8000 hours, far above the industry average.
For high-demand facilities (e.g., 1.5 million tons/year ethylene plants), MINNUO offers modular nitrogen systems with single-unit capacities up to 10,000 Nm³/h, scalable to over 20,000 Nm³/h through parallel setups. The intelligent pressure compensation system dynamically adjusts output based on pipeline pressure fluctuations, keeping pressure stable at 0.6–1.0 MPa (±0.05 MPa variation), thus ensuring uninterrupted operation.
Most importantly, the system includes a backup adsorption tower, allowing for maintenance without shutdown. This ensures zero production loss, completely eliminating dependence on liquid nitrogen logistics.
3. Full Lifecycle Cost Reduction – ROI in 1.8 Years
In the context of narrowing industry margins, cost control is crucial. MINNUO nitrogen generators help petrochemical enterprises save across the entire lifecycle — from purchase to operation and maintenance:
- Low Operating Cost: Using air as raw material, nitrogen generation consumes only 0.5 kWh/Nm³. At an electricity rate of ¥0.6/kWh, the cost is one-third of liquid nitrogen.
- No Transport or Storage Costs: No tankers or gas cylinders required, saving approximately ¥720,000/year in transportation (for distances >200 km) and ¥480,000/year in tank depreciation.
- Low Maintenance Cost: The core component — carbon molecular sieve — is imported with a lifespan over 5 years (vs. 3-year industry average). Solenoid valve failure rate is under 0.1%, with annual maintenance costs at just 2% of equipment value.
For a refinery producing 2 million tons/year, MINNUO nitrogen generators cut annual costs by over ¥4 million, with a payback period of 1.8–2.1 years, offering outstanding long-term value.
II. MINNUO Nitrogen Generators: Custom Solutions for All Petrochemical Scenarios
Nitrogen purity, pressure, and flow rate requirements vary widely across petrochemical applications. With over 15 years of industry experience, MINNUO offers scenario-based customization across four key areas:
1. Oil & Gas Extraction: Corrosion Prevention and Production Enhancement
Well casings are susceptible to corrosion from oxygen and CO₂. Mixtures of oil/gas with air can ignite. MINNUO offers oilfield-specialized nitrogen systems with the following advantages:
- Field-Ready Design: Outdoor cabinets are weatherproof, operating from -30°C to +50°C, suitable for deserts, highlands, and coastal fields.
- Adjustable Purity: Nitrogen purity is configurable from 99.5% to 99.99%, keeping oxygen content below 0.5%, reducing corrosion rate from 0.2mm/year to 0.05mm/year.
- Enhanced Production: When used in gas-lift oil recovery, high-pressure nitrogen reduces crude oil density, increasing single-well output by 15%–20%.
Case: After adopting MINNUO systems in 2021, a Xinjiang oilfield saw casing life extended 3x and single-well oil output increase by 2,555 tons/year.
2. Refining Processes: Process Stability and Product Quality
Key refining operations like FCC (Fluid Catalytic Cracking) and hydrofining require highly pure, stable nitrogen. MINNUO’s refinery-focused generators solve these pain points:
- High Purity: Up to 99.999% nitrogen purity prevents catalyst oxidation and deactivation, lowering catalyst loss from 5% to 1%.
- Precision Pressure Control: Fluctuations within ±0.02 MPa ensure proper hydrogen seal pressure, cutting hydrogen leakage from 0.5% to under 0.1%.
- Load-Adaptive Supply: Nitrogen output adjusts to unit load, avoiding energy waste and boosting gasoline yield by 2 percentage points.
Case: A Shandong refinery replaced its nitrogen supply with MINNUO systems in 2022. The plant reported zero process disruptions, 100% product conformity, and over ¥3.8 million/year in cost savings.
3. Chemical Production: Vapor Suppression and Storage Extension
Products like ethylene and polyethylene require nitrogen for blanketing storage tanks, preventing volatilization and oxidation. MINNUO’s chemical-industry solutions include:
- Customizable Parameters: Purity from 95%–99.999%, pressure from 0.2–1.0 MPa, adjustable per product (e.g., 99.999% for liquid ethylene, 99.5% for polyethylene pellets).
- Level-Based Control: Nitrogen flow is linked to tank level — increasing during filling to reduce vapor, decreasing during drawdown to avoid waste.
- Storage Extension: Nitrogen blanketing reduces oxygen content to <0.5%, extending polyethylene shelf life from 3 to 12 months, cutting spoilage losses by ¥800,000/year.
4. Emergency Maintenance: Rapid Inerting and Enhanced Safety
Before equipment maintenance, nitrogen is used to displace flammable/explosive materials. Traditional liquid nitrogen requires 24 hours to purge a 1000m³ tank. MINNUO’s high-flow nitrogen generators (10,000 Nm³/h per unit) can complete the same task in just 8 hours — a 200% efficiency gain.
Purity remains stable at >99.99%, ensuring safe oxygen levels post-purge. Additionally, the system can handle small-scale fire suppression — nitrogen blankets the flame, isolating oxygen, preventing corrosion or contamination that water-based extinguishing might cause.
III. Choosing MINNUO: Not Just Equipment, But End-to-End Service Assurance
As a national high-tech enterprise, MINNUO offers not just premium nitrogen generators, but a full-service lifecycle:
- Custom Engineering: On-site assessment by engineers to design tailor-made nitrogen supply systems based on purity, flow, and environmental requirements.
- Professional Installation & Commissioning: Certified technicians follow petrochemical construction standards, ensuring commissioning in under 7 days on average.
- 24/7 After-Sales Support: With 7 national service hubs, response time is under 2 hours, and support is available 365 days a year. Customer repurchase rate: 85%.
“We used to lose millions whenever typhoons disrupted liquid nitrogen delivery. Since switching to MINNUO nitrogen generators, our supply reliability reached 99.99%, and we save over ¥5 million annually.”
— Production Manager, Major Petrochemical Enterprise
Conclusion
As the petrochemical industry shifts toward safer, more efficient, and greener operations, MINNUO nitrogen generators offer a compelling solution with their explosion-proof safety, continuous nitrogen output, and full-lifecycle cost savings. Looking ahead, MINNUO will continue to innovate smarter, more energy-efficient nitrogen generation solutions, empowering the petrochemical sector with higher productivity and safer operations.
MINNUO Nitrogen Generators — The Reliable Nitrogen Supply Partner and Powerful Cost-Reduction Tool for Petrochemical Enterprises.
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